Transcript for Delta Air Lines Announcing an Overhaul of the Frequent Flier Program

And today, a shock for everyone who treasures frequent flyer miles. Delta airlines announced a big change. And the big advantage goes to business travelers with corporate expense accounts. So, what does this mean for everybody else? David Kerley tells us. Reporter: You're already paying more for bags and food. And tonight, more bad news for many travelers. The first major carrier, delta, is completely overhauling its frequent flyer program. You used to be able to earn your miles on the distance you fly. The longer you sit in the airplane seat, you would be rewarded. Now, you will be rewarded for spending instead of the time in the set. Reporter: Today, someone in first class and someone in economy. And each receives 4,900 miles in their account. But under delta's new plan, set to take effect next January, if I buy a ticket in advance for $350, I'll only get 1,700 miles. And the last-minute business traveler will get 5,000 miles. And those part of the more elite flyer programs will benefit more from a multiplier effect. It's the high-spending business travelers that delta wants. At the head of the frequent flyer program said, the changes are aimed to better reward the most loyal customers. This system is already in effect in a couple of smaller airline ps and some hotels are using the same calculation. So, is this the point plan of the future? Really bold and risky move on delta's part. Other airlines will observe. And certainly, if consumers respond well, then they'll follow. Reporter: Getting that free ticket is going to cost you more. David Kerley, ABC news, Washington.

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